Describes the physical characteristics, habitats, food habits, and defense mechanisms of this small-toothed mammal that likes to spin while swimming or leaping.
Describes the physical characteristics, habitats, food habits and defense mechanism of this short-snouted mammal that live in the northern waters of the Atlantic and Pacific oceans.
Describes the physical characteristics, habitat, food habits and defense mechanism of this river-dwelling dolphin, distinguished by its long, thin, pointy teeth.